Upgrading The M4 Mac Mini With More Storage

December 1, 2024 by Navarre Bartz 17 Comments

Apple’s in-house chips have some impressive specs, but user serviceability is something Apple left behind for consumer machines around a decade ago. Repair legend [dosdude1] shows us how the new M4 Mac mini can get a sizeable storage upgrade without paying the Apple tax.

The Mac mini is Apple’s least expensive machine, and in the old days you could swap a SATA drive for more storage and not pay the exorbitant prices that OEMs demand. Never one to turn down a walled garden, later Intel machines and now the ARM-based M-series chips soldered storage into the machine leaving an upgrade out of the hands of anyone without a hot air station.

Both the Mac Studio and Mac mini now have proprietary storage cards, and after some tinkering, [dosdude1] has successfully upgraded the storage on the base model M4 mini. While most people don’t casually reball NAND chips while chatting on a video, his previous work with others in the space to make a Mac Studio upgrade kit give us hope we’ll soon see economical storage upgrades that keep the Mac mini affordable.

We’ve previously covered the first time Apple tried to make its own processors, and some of their more recent attempts at repairability.

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Even Apple Get Their Parts Wrong Sometimes

November 27, 2024 by Jenny List 14 Comments

There can be few among those of us who produce printed circuit boards, who have not at some point placed a component the wrong way round, or with the wrong footprint. Usually this can be rectified with a bit of rework and a fresh board spin, but just occasionally these mishaps make it into the wild undetected. It seems nobody is immune, as [Doug Brown] is here to tell us with a tale of an Apple product with a misplaced capacitor.

The LC series of Macs came out through the early 1990s, and their pizza-box style cases could be found slowly turning yellow in universities and schools throughout that decade. Of them there was a persistent rumor of the LCIII had a misplaced capacitor, so when he received an unmodified original machine he took a look. The investigation is quite simple, but revealing — there are three power supply rails and one of the capacitors does have a significant leak.

The explanation is simple enough, the designer had placed a capacitor on each rail, with its negative side to the ground plane, but one of the rails delivers -5 volts. Thus the capacitor is the wrong way round, and must have failed pretty early in the lifetime of each LCIII. We’re curious then since so many of them went through their lives without the component being replaced, how the circuit remained functional. We’re guessing that there were enough other capacitors in the -5 volt line to provide enough smoothing.

The Most Inexpensive Apple Computer Possible

November 7, 2024 by Bryan Cockfield 20 Comments

If Apple has a reputation for anything other than decent hardware and excellent industrial design, it’s for selling its products at extremely inflated prices. But there are some alternatives if you want the Apple experience on the cheap. Buying their hardware a few years out of date of course is one way to avoid the bulk of the depreciation, but at the extreme end is this working Mac clone that cost just $14.

This build relies on the fact that modern microcontrollers absolutely blow away the computing power available to the average consumer in the 1980s. To emulate the Macintosh 128K, this build uses nothing more powerful than a Raspberry Pi Pico. There’s a little bit more to it than that, though, since this build also replicates the feel of the screen of the era as well. Using a “hat” for the Pi Pico from [Ron’s Computer Videos] lets the Pico’s remaining system resources send the video signal from the emulated Mac out over VGA, meaning that monitors from the late 80s and on can be used with ease. There’s an option for micro SD card storage as well, allowing the retro Mac to have an incredible amount of storage compared to the original.

The emulation of the 80s-era Mac is available on a separate GitHub page for anyone wanting to take a look at that. A VGA monitor is not strictly required, but we do feel that displaying retro computer graphics on 4K OLEDs leaves a little something out of the experience of older machines like this, even if they are emulated. Although this Macintosh replica with a modern e-ink display does an excellent job of recreating the original monochrome displays of early Macs as well.

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Asahi Linux Brings Better Gaming To Apple Silicon

October 29, 2024 by Navarre Bartz 7 Comments

For those of you longing for better gaming on an Apple Silicon device, Asahi Linux is here to help.

While Apple’s own line of CPUs are relatively new kids on the block, they’ve still been around for four years now, giving hackers ample time to dissect their innards. The team behind Asahi Linux has now brought us “the only conformant OpenGL®, OpenCL™, and Vulkan® drivers” for Apple’s M1 and M2.

The emulation overhead of the system means that most games will need at least 16 GB of RAM to run. Many games are playable, but newer titles can’t yet hit 60 frames per second. The developers are currently focused on “correctness” and hope to improve performance in future updates. Many indie titles are reported to already be working at full speed though.

You can hear more about some of the fiddly bits of how to “tessellate with arcane compute shaders” in the video below. Don’t worry, it’s only 40 minutes of the nine hour video and it should start right at the presentation by GPU dev [Alyssa Rosenzweig].

If you want to see some of how Linux on Apple Silicon started or some of the previous work on hacking the M1 GPU, we have you covered.

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Revisiting 1990’s Mac Games That Never Were

September 23, 2024 by Dave Rowntree 17 Comments

[John Calhoun] was digging around their old MAC hard drives, revisiting some abandoned shareware games they wrote over three decades ago, and has uploaded the recovered disk images to GitHub for everyone to take apart and play with. This repository has a few of the games complete with their development files and the compiler environment, a mixture of Think Pascal and C.

Back then, [John] had a solid mantra when creating projects, specifically prototyping fast and abandoning things quickly if they were not working out. The blog shows a list of twenty-eight projects, of which only five ever made it to release, with all the rest left to rot. This is reminiscent of the attitude around Silicon Valley of moving fast and breaking things. Anyway, reasons for ditching a project ranged from ‘too much sprite work’ for a D’n’D style game to simply ‘not fun’ for some with clunky control mechanisms. [John] even abandoned a neat-looking steampunk flight simulator due to the sheer amount of work needed. Of course, it’s not all lost effort. Much of the code written was reused across multiple projects; after all, there’s no point in re-writing a cosine lookup table if you’ve already got one kicking around in another project.

Still, it’s a fun trip down memory lane, looking deep into projects that never were and the development journey to becoming a successful programmer.

While it isn’t hard to find old Macintosh hardware, some are not in great shape. Here’s a fun Hackintosh project that uses retro parts. [John] was featured a while back, with his homage to his first mac, a sleek Rpi-powered eInk desk ornament. Finally, we can’t talk about recovering retro software without looking in detail at the floppy disk themselves.

A beige computer monitor with a green glow sits atop a flat, beige Apple IIc with a mouse next to it on a dark wooden table. A vase full of bright pink flowers is in the background.

G4 Mac Mini Is A Wolf In Apple IIc Clothing

September 15, 2024 by Navarre Bartz 4 Comments

Restomods let us relive some of the glory days of industrial design with internals that would blow the socks off the original device. [Mental Hygiene] decided to update an Apple IIc with a G4 brain.

Starting with a broken IIc, they pulled the internals, including the venerable 6502, and transplanted the parts from a G4 Mac mini into the case. There was plenty of room for the small desktop and its power supply. We love how they were able to repurpose the 5 1/4″ floppy access on the side of the IIc as a DVD drive.

The original keyboard was adapted with an Arduino Teensy into a USB unit for the mini, but the internals of the mouse were replaced with a modern USB laser mouse running the signals over the original connector. What really sells this particular restomod is the “VGA adapter that outputs monochrome NTSC via RCA” allowing a vintage Apple CRT to make this look like a device that somehow upgraded all the way to OSX.

This mod looks to be from 2012, so we’re wondering if it’s time someone did this with an Apple Silicon mini? We’ve previously covered a few different minis inside G4 iMacs. We’ve even seen someone tackle the Compact Macintosh with an iPad mini.

Rescuing High-Res Displays From Older Macs

September 10, 2024 by Bryan Cockfield 25 Comments

When Apple started rolling out its Retina displays, it multiplied the amount of pixels compared to their standard, non-Retina displays by four. This increased pixel density while keeping the standard screen size — idea for those needing a lot of detail for their work. But, as is common with Apple, using these displays outside of the Apple ecosystem can be quite a challenge. Retina displays have been around for about a decade now, though, with some third-party hardware able to break them free of their cage. This post details how [Kevin] liberated the 5K display from a 2017 iMac for more general use with support for USB-C.

The first step was to find a used iMac for the right price, and then sell off most of its parts to recoup most of the initial cost. That brought the cost of the panel itself to about $250. The key to getting the display working without all of the Apple hardware is the R1811 driver board, which can be had for around $300. A new 156 watt power supply was added to the mix, and [Kevin] also put in a few extras like a USB cable extension and a latching push-button which kills the display’s power. Additionally, he attempted to get the original iMac speakers working with this setup too, but none of his attempts resulted in anything close to quality sound so he’s mostly abandoned that extra feature for now.

With that all buttoned up, he has a 27″ 5K display with USB-C input for around $650 which is quite a deal. The MacRumors thread that [Kevin] added his project to currently has around 1,700 posts about similar builds too, so it can be a wealth of information for all kinds of models. As Apple drops support for their older machines, these displays will become more and more common and projects like these can keep a lot of e-waste out of the landfill while also providing decent hardware at a bargain price. Don’t just look for iMacs and MacBooks though; there’s a similar process to use various iPad displays for other things as well.